Quote:
Originally Posted by mrhasan
Yah I do that 
BTW did you refer "manual calibration of hydrometer" as checking the reading with freshwater? |
No, that is not a good way to do it. A hydrometer should be checked against a calibrated refractometer. If you don't have a refractometer your LFS should be able to check your hydrometer against their own refractometer. Just politely ask when they last calibrated their refractometer before using it to calibrate your hydrometer.